body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f0faff;
  color: #333;
}

header {
  background: #4CAF50;
  color: white;
  padding: 15px;
  text-align: center;
}

nav ul {
  list-style: none;
  padding: 0;
}

nav ul li {
  display: inline;
  margin: 0 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.intro, .highlight {
  padding: 20px;
  margin: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.highlight h2 {
  color: #4CAF50;
}

footer {
  background: #4CAF50;
  color: white;
  text-align: center;
  padding: 10px;
    margin-top: 20px;
}